function setCookie(cname, cvalue, exdays) 
{
	var d = new Date();
	d.setTime(d.getTime() + (exdays*24*60*60*1000));
	var expires = "expires="+d.toUTCString();
	document.cookie = cname + "=" + cvalue + "; " + expires;
}

function getCookie(cname) 
{
	var name = cname + "=";
	var ca = document.cookie.split(';');
	
	for( var i=0; i < ca.length; i++ )
	{
		var c = ca[i];
		
		while( c.charAt(0)== ' ' ) 
			c = c.substring(1);
			
		if( c.indexOf(name) != -1 )
			return c.substring(name.length, c.length);
	}
	
	return "";
}

function deleteCookie(cname)
{
	setCookie(cname, "", -1);
}